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Method and device for attenuating water column reverberations using co-located hydrophones and geophones in ocean bottom seismic processing

  • US 5,774,416 A
  • Filed: 04/07/1995
  • Issued: 06/30/1998
  • Est. Priority Date: 04/07/1995
  • Status: Expired due to Term
First Claim
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1. A process for attenuating noise is co-located hydrophone/geophone data, said process comprising:

  • receiving a hydrophone signal at a hydrophone seismic sensor located at a hydrophone/geophone receiver location from a seismic signal source;

    decomposing said hydrophone signal into a plurality of bandwidth-limited hydrophone signals;

    receiving a geophone signal at a geophone seismic sensor located at the hydrophone/geophone receiver location from the seismic signal source;

    decomposing said geophone signal into a plurality of bandwidth-limited geophone signals, the pass-bands of the bandwidth-limited geophone signals being substantially equal to the pass-bands of the bandwidth-limited hydrophone signals;

    normalizing said hydrophone and geophone signals; and

    combining the normalized signals;

    wherein coherent noise is attenuated in the combined and normalized signals.

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